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Objectively measured physical activity and sedentary time in youth: The International children's accelerometry database (ICAD)

Cooper, Ashley R., Goodman, Anna, Page, Angie S., Sherar, Lauren B., Esliger, Dale W., van Sluijs, Esther M. F., Andersen, Lars Bo, Anderssen, Sigmund, Cardon, Greet, Davey, Rachel, Froberg, Karsten, Hallal, Pedro, Janz, Kathleen, Kordas, Katarzyna, Kreimler, Susi, Pate, Russ R., Puder, Jardena J., Reilly, John J., Salmon, Jo, Sardinha, Luis B., Timperio, Anna and Ekelund, Ulf 2015, Objectively measured physical activity and sedentary time in youth: The International children's accelerometry database (ICAD), International journal of behavioral nutrition and physical activity, vol. 12, no. 1, pp. 1-10, doi: 10.1186/s12966-015-0274-5.

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Title Objectively measured physical activity and sedentary time in youth: The International children's accelerometry database (ICAD)
Author(s) Cooper, Ashley R.
Goodman, Anna
Page, Angie S.
Sherar, Lauren B.
Esliger, Dale W.
van Sluijs, Esther M. F.
Andersen, Lars Bo
Anderssen, Sigmund
Cardon, Greet
Davey, Rachel
Froberg, Karsten
Hallal, Pedro
Janz, Kathleen
Kordas, Katarzyna
Kreimler, Susi
Pate, Russ R.
Puder, Jardena J.
Reilly, John J.
Salmon, Jo
Sardinha, Luis B.
Timperio, Anna
Ekelund, Ulf
Journal name International journal of behavioral nutrition and physical activity
Volume number 12
Issue number 1
Start page 1
End page 10
Total pages 10
Publisher BioMed Central
Place of publication London, Eng.
Publication date 2015-09-17
ISSN 1479-5868
Keyword(s) Accelerometer
Adolescents
Children
Physical activity
Sedentary
Summary Background: Physical activity and sedentary behaviour in youth have been reported to vary by sex, age, weight status and country. However, supporting data are often self-reported and/or do not encompass a wide range of ages or geographical locations. This study aimed to describe objectively-measured physical activity and sedentary time patterns in youth. Methods: The International Children's Accelerometry Database (ICAD) consists of ActiGraph accelerometer data from 20 studies in ten countries, processed using common data reduction procedures. Analyses were conducted on 27,637 participants (2.8-18.4 years) who provided at least three days of valid accelerometer data. Linear regression was used to examine associations between age, sex, weight status, country and physical activity outcomes. Results: Boys were less sedentary and more active than girls at all ages. After 5 years of age there was an average cross-sectional decrease of 4.2 % in total physical activity with each additional year of age, due mainly to lower levels of light-intensity physical activity and greater time spent sedentary. Physical activity did not differ by weight status in the youngest children, but from age seven onwards, overweight/obese participants were less active than their normal weight counterparts. Physical activity varied between samples from different countries, with a 15-20 % difference between the highest and lowest countries at age 9-10 and a 26-28 % difference at age 12-13. Conclusions: Physical activity differed between samples from different countries, but the associations between demographic characteristics and physical activity were consistently observed. Further research is needed to explore environmental and sociocultural explanations for these differences.
Language eng
DOI 10.1186/s12966-015-0274-5
Field of Research 110699 Human Movement and Sports Science not elsewhere classified
Socio Economic Objective 920401 Behaviour and Health
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2015
Copyright notice ©2015, BioMed Central
Persistent URL http://hdl.handle.net/10536/DRO/DU:30078643

Document type: Journal Article
Collections: School of Exercise and Nutrition Sciences
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.